Can I share pics and info on this to friends in a Facebook group/chat/forum about TLs etc ?
(I don’t know your name to give credit )
(I don’t know your name to give credit )
Glaxar,
I have ,4 ,15sw2000's still waiting for a cabinet.
Personal issues made me to pause all projects.
Is it ok to store the drivers in their box as it came? Magnet facing the floor of the box, cone looking at the ceiling.
Or you need to orient them vertical so magnet is on left and come facing right
I have ,4 ,15sw2000's still waiting for a cabinet.
Personal issues made me to pause all projects.
Is it ok to store the drivers in their box as it came? Magnet facing the floor of the box, cone looking at the ceiling.
Or you need to orient them vertical so magnet is on left and come facing right
No credit necesarry. I posted it so its free game. Thank you for the consideration!
Yes. The only issue i saw with the design was size. These drivers preferred a larger throat volume for some reason, but it seemed to model well if you have the space!
i dont think it should be a problem especially if they're new. They were likely stored that way in a warehouse somewhere. i have my thams magnet up facing the floor.
The PRV 15sw2000 has ~169 grams (nearly 6 ounces) of mechanical mass (Mms) pulling the cone down.
I've seen drivers with a fraction of that mass sag several millimeters over time.
After the sag takes a set, the driver's Xmax is reduced, and the offset increases distortion when you get around to using them.
For long term storage, much better to avoid cone sag by storing them vertically.
Hopefully not long enough for the inevitable sag to affect performance.
Most drivers are shipped soon after they are built, few manufacturers can afford to store much inventory.
Art
If anyone wants to build the sub i made, consider the Down4Sound DBZ 15 @ $256
I consider this a bargain.
I consider this a bargain.
Hey glaxzar,
Are you planning to roll out the PA version of your sub, Fb of 30 or 35 maybe,if I can use the 15sw2000 ,I guess it will be great
Are you planning to roll out the PA version of your sub, Fb of 30 or 35 maybe,if I can use the 15sw2000 ,I guess it will be great
Care to share the HR Input Parameters screen to the BP8S model below?
Knock 2" off each dimension and the enclosure would fit in my trunk!
A 42"W x 18"H x 26"D enclosure would probably give me around a 30-80hz response.
i dont really have any intentions but if you want something specific i can come up with something
18" height would be difficult in this configuration. Everything ive come up with so far is 20" or more. Even if it could cram in there im not sure how it would perform in a trunk. I would consider a 10 or possibly a 12 for this style of enclosure.
I think the ‘Weaker’ the motor (higher Qes) the bigger the resonator needs to be or it can’t stir up the Fb much. At some point it needs to be a huge TL and then it flops around when not held by the pressure of resonance and really sounds like 💩 (and those need big vented reflex or possible a sealed box to tame?)
17.5" height x 42.25" wide x 23" deep.
214L Stepped Tapped Horn (BP6S).
Your BP8S is around 305L internally.
This model is even better and smaller...38-87hz @ 138dB.
17.5" height x 38.25" wide x 21" deep external.
This enclosure might fit in a lot of md-size car trunks. You might have to remove the rear deck speakers.
17.5" height x 38.25" wide x 21" deep external.
This enclosure might fit in a lot of md-size car trunks. You might have to remove the rear deck speakers.
36x24.5x18"
if 33ms of gd @ 80hz bothers you, just open the port to a square opening and get this response.
this response is with a single 12
When is this just polishing a turd? At some point, you can’t listen to this junk. So creating those huge resonance spikes at three times the fundamental and then trying to remove them electronically is a joke? Right?
I can’t stand this stuff in my ‘experiments’ and it sounds ‘worse’ than brief moments of ringing ?
I can’t stand this stuff in my ‘experiments’ and it sounds ‘worse’ than brief moments of ringing ?
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No, that’s blasphemy 😝
I’m using tapered pipes(as shown) , but have had some surprisingly good results from a 3:1 Parallel pipe (with an absorber stub) more recently
My ‘roar’ has way more group delay than that simulation bp1 created
I don’t know how much is too much
I’m using tapered pipes(as shown) , but have had some surprisingly good results from a 3:1 Parallel pipe (with an absorber stub) more recently
My ‘roar’ has way more group delay than that simulation bp1 created
I don’t know how much is too much
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im screwed, my junk sucks really bad, but I really needed to build/hear it to appreciate ‘group delay’
tapped horns and bp enclosures have increased group delay. i'm not sure why you're so sensitive to it. what you're showing there is within reason imo. have you checked the enclosure for other resonances or leaks? have you done proper eq and time alignment? most of these advanced designs, tapped horns, multiple entry horns etc, basically require dsp. the idea is that youre going to make compromises that are within reason and are able to be remedied on the digital end in order to GAIN something that you can only get at the end of the chain.
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